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  <title>List all the handlers available</title>
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  <div id="layout-content"><div id="function.dba-handlers" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">dba_handlers</h1>
  <p class="verinfo">(PHP 4 &gt;= 4.3.0, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">dba_handlers</span> &mdash; <span class="dc-title">List all the handlers available</span></p>

 </div>
 <div class="refsect1 description" id="refsect1-function.dba-handlers-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>dba_handlers</strong></span>
    ([ <span class="methodparam"><span class="type">bool</span> <code class="parameter">$full_info</code><span class="initializer"> = <strong><code>FALSE</code></strong></span></span>
  ] ) : <span class="type">array</span></div>

  <p class="para rdfs-comment">
   <span class="function"><strong>dba_handlers()</strong></span> list all the handlers supported by this
   extension.
  </p>
 </div>

 <div class="refsect1 parameters" id="refsect1-function.dba-handlers-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>

    
     <dt>
<code class="parameter">full_info</code></dt>

     <dd>

      <p class="para">
       Turns on/off full information display in the result.
      </p>
     </dd>

    
   </dl>

  </p>
 </div>

 <div class="refsect1 returnvalues" id="refsect1-function.dba-handlers-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   Returns an array of database handlers. If <code class="parameter">full_info</code>
   is set to <strong><code>TRUE</code></strong>, the array will be associative with the handlers names as
   keys, and their version information as value. Otherwise, the result will be
   an indexed array of handlers names.  
  </p>
  <blockquote class="note"><p><strong class="note">Note</strong>: 
   <p class="para">
    When the internal cdb library is used you will see 
    <em>cdb</em> and <em>cdb_make</em>.
   </p>
  </p></blockquote>
 </div>

 <div class="refsect1 examples" id="refsect1-function.dba-handlers-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-968">
    <p><strong>Example #1 <span class="function"><strong>dba_handlers()</strong></span> Example</strong></p>
    <div class="example-contents">
<div class="phpcode"><pre><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /><br /></span><span style="color: #007700">echo&nbsp;</span><span style="color: #DD0000">"Available&nbsp;DBA&nbsp;handlers:\n"</span><span style="color: #007700">;<br />foreach&nbsp;(</span><span style="color: #0000BB">dba_handlers</span><span style="color: #007700">(</span><span style="color: #0000BB">true</span><span style="color: #007700">)&nbsp;as&nbsp;</span><span style="color: #0000BB">$handler_name&nbsp;</span><span style="color: #007700">=&gt;&nbsp;</span><span style="color: #0000BB">$handler_version</span><span style="color: #007700">)&nbsp;{<br />&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;clean&nbsp;the&nbsp;versions<br />&nbsp;&nbsp;</span><span style="color: #0000BB">$handler_version&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">str_replace</span><span style="color: #007700">(</span><span style="color: #DD0000">'$'</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">''</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$handler_version</span><span style="color: #007700">);<br />&nbsp;&nbsp;echo&nbsp;</span><span style="color: #DD0000">"&nbsp;-&nbsp;</span><span style="color: #0000BB">$handler_name</span><span style="color: #DD0000">:&nbsp;</span><span style="color: #0000BB">$handler_version</span><span style="color: #DD0000">\n"</span><span style="color: #007700">;<br />}<br /><br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</pre></div>
    </div>

    <div class="example-contents"><p>以上例程的输出类似于：</p></div>
    <div class="example-contents screen">
<div class="cdata"><pre>
Available DBA handlers:
 - cdb: 0.75, Revision: 1.3.2.3 
 - cdb_make: 0.75, Revision: 1.2.2.4 
 - db2: Sleepycat Software: Berkeley DB 2.7.7: (08/20/99)
 - inifile: 1.0, Revision: 1.6.2.3 
 - flatfile: 1.0, Revision: 1.5.2.4 
</pre></div>
    </div>
   </div>
  </p>
 </div>

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